Low-tech Tiny UHF tracker transmitter

A very small circuit that can be used to track objects up to a distance of about 400m. No GPS or other Hi-tech , just a little RF transmitter that sends out intermittent beeps. Locating it requires a directional antenna and adjustable attenuators.
Current consumption is about 180uA on average.
Battery is a 1.5V silver oxide battery.
BTW, do not attempt to stick anything like this in your nose, like Arni did. :-)
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